"World consumption of primary energy rebounded in 2000, rising by 2.1%, driven by continued strong growth in the world economy and a return to colder winter weather patterns. There were again strong contrasts in the performance of different fuels. Natural gas and coal grew by significantly more than their 1990-2000 annual averages and oil and nuclear energy grew effectively in line with their 10-year average, while hydroelectricity grew by less."